JP2000347647A - Handwriting-like character outputting device, and program storage medium for the device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To express handwriting-like fluctuation in an outline of a character by using random numbers, when the outline of the character expressed by an aggregate of spatial frequency components is deformation-processed. SOLUTION: A CPU 1 makes random numbers reflected to a character outline data to impart handwriting-like fluctuation to a character outline, when the character outline comprising an aggregate of frequency components provided by DET-processing a usual character font is deformation-processed. The CPU 1 restores the resulting handwriting-like character outline data into a coordinate sequence data by conducting inverse DET transformation thereof to output it.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handwritten character output device for outputting handwritten characters such as written with a brush, and a program recording medium therefor.

[0002]

2. Description of the Related Art Conventionally, in a document data processing apparatus such as a word processor or a personal computer, when outputting input document data, a bitmap font expressing a character shape by a set of dots or a character outline is partially used. Each time, an outline (vector) font, which is expressed as a set of reference points and a straight line or Bezier curve connecting them, is read out and output / printed out, but the outline font is rotated and italicized compared to the bitmap font. There is an advantage that deformation such as enlargement / reduction is easy, and the contour is smooth after the deformation.

[0003]

However, even outline fonts are not suitable for changing the thickness of one stroke constituting a character or for changing the basic outline of a font greatly. If required, individual fonts had to be prepared in advance as special fonts. In such a case, there is a limit even if the data is compressed and stored structurally by making the font into parts,
The data capacity was large. Furthermore, an outline font generally has a small data capacity when the contour is smooth, but the data capacity explosively increases in a shape that changes (vibrates) finely. Was not prepared in advance. Accordingly, the present applicant has developed a frequency font generation function that generates a frequency font, which is obtained by expressing the outline of a character by a set of discrete spatial frequency components using a normal character font, and a character font based on the frequency font. By simply adding a deformed font generation function that generates a deformed font that deforms the outline of a character, you can significantly change the basic outline and thickness of characters, add various expressions, etc. while suppressing the increase in data volume (Japanese Patent Application No. 10-221119, title of the invention: character font deformation output device and its program recording medium) have been proposed. The object of the present invention is to develop the technology previously proposed by the present applicant, and to use a random number value when deforming the contour of a character represented by a set of spatial frequency components, using a random value. Is to be able to express handwriting-like fluctuations in the outline of.

[0004]

The means of the present invention are as follows. According to the first aspect of the present invention, in order to deform a contour of a character represented by a set of discrete spatial frequency components, a random number value is reflected on the contour data to thereby modify the character. Character processing means for generating a handwritten character in which the contour of the character is fluctuated, conversion means for converting the contour data of the character deformed by the character processing means into coordinate string data, and coordinates converted by the conversion means Output means for developing and outputting handwritten characters based on the column data. The present invention may be as follows. (1) The character processing means imparts fluctuation to the outline of the character by multiplying a predetermined element that changes the length of a specific frequency component or all frequency components in a set of spatial frequency components by a random value. Generate handwritten style characters. (2) The character processing means adds fluctuation to the outline of the character by multiplying a predetermined element that changes the thickness of a specific frequency component or all frequency components of the set of spatial frequency components by a random value. Generate handwritten style characters. (3) The character processing means multiplies all the elements constituting the aggregate of the spatial frequency components by the same random number value, thereby enlarging / reducing the entire character and performing a deformation including a fluctuation in the size. (4) A random number generating means for sequentially generating a predetermined random number from the same initial value is provided, and a random number value generated by the random number generating means and used when the character processing means deforms the outline of a character. In addition to displaying and storing the handwritten characters deformed using this random number value, when the printing of the handwritten characters is instructed, the stored random number value is recalled, and An output control unit is provided for printing and outputting a handwritten character deformed by using a random number. In this case, each time a desired character is selected from a plurality of types of handwritten characters generated and displayed using different random numbers, the random number value used for the deformation of the character is stored and stored, respectively. When the printing of the handwritten character is instructed, an arbitrary random value is selected from the stored random numbers and recalled, and the transformed handwritten character is printed using the random value. You may make it output. In the invention according to claim 1, in order to deform the outline of a character represented by a set of spatial frequency components, a random number value is reflected on the outline data, thereby giving a fluctuation to the outline of the character. Thus, the contour data of the deformed character is converted into coordinate string data, and the handwritten character is developed and output based on the coordinate string data. Therefore, when deforming the contour of the character represented by the aggregate of the spatial frequency components, the random number value is used, whereby the handwriting-like fluctuation can be expressed in the contour of the character.

According to a fifth aspect of the present invention, in order to transform a contour of a character represented by a set of discrete spatial frequency components, the contour data is filtered. Character processing means for generating a handwritten character in which the contour of a character is fluctuated by reflecting a random number value to the setting value of this filter, and contour data of the character deformed by the character processing means are converted into coordinate sequence data. , And output means for expanding and outputting handwritten characters based on the coordinate string data converted by the converting means. The present invention may be as follows. (1) The character processing means distributes a weighted average of filter setting values by random numbers when processing the contour data of a character represented by a set of spatial frequency components with a plurality of types of filters. In addition, the handwriting fluctuation is imparted to the outline of the character. (2) A random number generating means for sequentially generating a predetermined random number from the same initial value is provided, and a random number value generated by the random number generating means and used when deforming a contour of a character by the character processing means In addition to displaying and storing the handwritten characters deformed using this random number value, when the printing of the handwritten characters is instructed, the stored random number value is recalled, and An output control unit is provided for printing and outputting a handwritten character deformed by using a random number. In this case, each time a desired character is selected from a plurality of types of handwritten characters generated and displayed using different random numbers, the random number value used for the deformation of the character is stored and stored, respectively. When the printing of the handwritten character is instructed, an arbitrary random value is selected from the stored random numbers and recalled, and the transformed handwritten character is printed using the random number. You may make it output. According to the fifth aspect of the present invention, in order to transform a contour of a character represented by a set of spatial frequency components, a random number is reflected in a set value of the filter when the contour data is filtered. Then, the contour of the character is fluctuated, thereby converting the contour data of the deformed character into coordinate sequence data, and developing and outputting a handwritten character based on the coordinate sequence data. Therefore, when deforming the contour of the character represented by the aggregate of the spatial frequency components, the random number value is used, whereby the handwriting-like fluctuation can be expressed in the contour of the character.

[0006]

(First Embodiment) A first embodiment of the present invention will be described below with reference to FIGS. FIG. 1A is a block diagram showing the entire configuration of the document data processing device. The CPU 1 is a central processing unit that controls the overall operation of the document data processing device according to various programs. The storage device 2 has a storage medium 3 in which an operating system, various application programs, data files, character font data and the like are stored in advance, and a drive system thereof. The storage medium 3 is fixedly provided or removably mountable, and includes a magnetic / optical storage medium such as a floppy disk, a hard disk, an optical disk, and a RAM card, and a semiconductor memory. The programs and data in the storage medium 3 are loaded into the RAM 4 under the control of the CPU 1 as needed. Further, the CPU 1 receives programs and data transmitted from other devices via a communication line or the like and stores them in the storage medium 3 or stored in a storage medium provided in other devices. Existing programs and data can be used via a communication line or the like. An input device 5, a display device 6, and a printing device 7, which are input / output peripheral devices, are connected to the CPU 1 via a bus line. The CPU 1 controls these operations according to an input / output program.

The input device 5 includes a keyboard, a pointing device such as a mouse, and an image reader for inputting character string data and the like and various commands.
Here, when the document data is input from the input device 5 at the time of document creation, the document data is displayed on the text screen of the display device 6 and the determined character string determined by the kana-kanji conversion is stored in the RAM 4. Note that the display device 6 is a liquid crystal display device, a CRT display device, a plasma display device, or the like that performs multicolor display, and the printing device 7 is a full-color printer device, which is a non-impact printer or an impact printer such as thermal transfer or inkjet. Output document data in color.

Here, when printing a document, if it is instructed to print a document with handwritten characters such as written with a brush, the CPU 1 uses an orthogonal transform, that is, a discrete Fourier transform (DFT) expansion system. Therefore, existing character fonts (bitmap fonts and outline fonts)
Is converted into a data structure represented by a set of discrete spatial frequency components. Here, each part constituting a character can be represented by a continuous function having a cycle of one round of the contour (closed curve).
The frequency that oscillates is used as the fundamental frequency of the DFT, and is converted into a data structure of an aggregate in which the fundamental frequency and a frequency that is an integral multiple of the fundamental frequency are combined. Note that the maximum order of the conversion result obtained by the DFT processing corresponds to the sampling theorem.

FIG. 1B shows a main configuration of the RAM 4, and various memory areas are allocated to the RAM 4. The character string storage unit 4-1 temporarily stores a character string to be subjected to the DFT processing. The CPU 1 reads out each character code constituting the character string from the head thereof and reads the character code from the normal font storage unit in the storage device 2. 2-1 is searched, and the corresponding character font is fetched. Normal font storage 2
-1 stores a bitmap font or an outline font in association with various characters, and the CPU 1 performs DFT processing on the character font read out from the normal font storage unit 2-1 for each part. The work part 4-2 is used. Frequency conversion work part 4-2
Is a work area for temporarily storing the conversion result for each part,
The CPU 1 is a DFT-processed frequency conversion work unit 4-2.
The contour data of one part is deformed and stored in the deformed font storage unit 4-3. Deformed font storage unit 4-3
Is for temporarily storing a deformed font in which handwriting-like fluctuations are added to the entire outline of a character. The CPU 1 generates original coordinate sequence data by performing an inverse Fourier transform on the outline data constituting the deformed font. The coordinate sequence data is developed in the print buffer 4-4.

FIG. 2 is a diagram conceptually showing a state in which an existing font is converted into a set of frequency components for each part by DFT conversion. One part of the font to be processed (in this case, an outline font) is drawn, and the outline of this bitmap is plotted. Here, the number of points for plotting one part is determined depending on how finely the conversion is desired. In the case of the discrete Fourier transform, the number is selected from a multiplier of “2”, for example, “512”. The contour of the part is plotted and the point P0,
XY coordinate values are fetched for each of P1, P2,. Note that the transform result by DFT is reversible unless the calculation accuracy is strictly determined, and can be returned to the original coordinate value by Fourier transform. In the case of a normal outline font, the number of parts is defined and attributes such as a reference point coordinate value, a straight line, and a Bezier curve are defined for each part (each image). In the case of the frequency font in the embodiment, the coordinates of the outline font and the description part of the attribute are a table of the number of spatial frequency components. That is, the DF for each part is associated with the character code, the number of parts, and the part number.
The T processing result is a numerical table describing a DC component, a fundamental frequency component, and a frequency component obtained by multiplying the DC component by an integer. Here, the processing result by the DFT is expressed as a complex number, and its size is discretely obtained for a real axis part and an imaginary axis part on a complex number plane.
"1" indicates the value of the real axis portion in the X-axis direction on the complex plane, and "Xim" indicates the value of the imaginary axis portion. Similarly, “Yrl” and “Yim” are the value of the real axis part and the value of the imaginary axis part in the Y-axis direction. In the figure, “F0” is a DC component, and the center part coordinates of the contour are described in the real part thereof. Note that a value of “zero” is always described in the imaginary axis part of “F0”. “F1” is a fundamental frequency component representing a frequency that vibrates once when making a round of the contour of the part, and the size and direction of the part are governed by this value. “F2” is a frequency component (secondary high-frequency component) that vibrates twice when making one round of the contour of the part, and the shape of the part is governed by this value, and this value increases in a part that is greatly bent. The following "F3",
“F4”... Are third- and fourth-order high-frequency components, the maximum order of which is half the number of coordinates when sampling the contour of the conversion target part. This is because the value of the second half can be easily derived only by performing the inversion of the positive / negative and the reverse order from the value of the first half.

FIG. 3 shows a state in which the character "sum" is decomposed for each part and subjected to DFT processing, and the vertically long parts forming the "nogi bias" and the "fresh" are formed. A table is shown in which values of a real part and values of an imaginary part obtained by performing DFT processing for each part are discretely distributed on a frequency axis by paying attention to a largely bent part. In this frequency distribution, the characteristics of the vertically long parts are exhibited at the fundamental frequency F1, and the characteristics of the parts which are greatly bent are exhibited at the next frequency F2 in addition to the fundamental frequency F1. FIG. 4 shows specific numerical values of a real axis portion, an imaginary axis portion, a real axis portion, and an imaginary axis portion in the X-axis direction obtained by performing the DFT processing on the character "sum". FIG. 8 is a diagram showing a correspondence relationship between each part constituting the “sum” and frequency data of each part. Here, as shown by "1" to "7" in the figure, this character "Sum" is composed of seven parts, and a set of spatial frequency components corresponding thereto is data of seven parts.

By using such a frequency font, the outline of a character can be freely changed. FIG. 5A shows a data structure in which all high frequency components of the spatial frequency components obtained by the DFT processing are cut by a digital filter (low-pass filter) to make all the frequency components after F3 zero.
A data structure in a case where a specific high-frequency component, for example, F56 is added and its value is set to a constant value to perform deformation by finely oscillating the contour line is shown. FIG. 5B shows the deformed state, in which the approximate shape of the character is dominated by the low-frequency components of F0, F1, and F2, and its outline is finely vibrated by the high-frequency component of F56. ,
The number and intensity of the vibrations can be arbitrarily controlled. To obtain a large vibration, the value may be increased, and to obtain a fine vibration, the order of the high frequency component may be increased. Here, in this embodiment, a random number value is reflected on contour data of a character represented by a set of spatial frequency components, thereby generating a handwritten character in which the contour of the character is fluctuated. . That is, FIG. 6 shows how a character is deformed when the value (Xr) of the real axis in the X direction, the value (Yr) of the real axis in the Y direction, and the value (Yi) of the imaginary axis of the spatial frequency component are changed. It is an example of
As the value of Xr increases, the length of the horizontal bar increases, and as the value decreases, the length decreases. Also, increasing the value of Yr increases the length of the vertical bar. At this time, the thickness does not change much. Conversely, increasing the value of Yi increases the width of the horizontal bar, and decreasing it decreases the width of the horizontal bar. However, in this example, the contour coordinates are sampled from one end in the longitudinal direction of each part and the Fourier transform is performed. If the sampling is performed from the center in the longitudinal direction, the relationship between the length and the thickness is reversed. By the way, when writing characters by hand, the thickness does not change much and the length often changes, so by manipulating the value of the Fourier-transformed real axis, the length can be changed without changing the position and thickness. Can be changed.

Next, the operation of the document data processing apparatus will be described with reference to FIGS.
This will be described with reference to the flowchart shown in FIG. Here, a program for realizing each function described in these flowcharts is stored in the storage medium 3 in the form of a program code readable by the CPU 1, and the CPU 1 performs an operation according to the program code. Execute sequentially. This is the same in other embodiments described later. FIG. 7 is a flowchart showing the overall operation when printing a character string. That is, the normal character font (outline font) is changed to 1
In addition to converting to a frequency font for each part, a transformed font is generated by processing the data that constitutes the frequency font, and the transformed font is returned to the original coordinate data by inverse Fourier transform. 3 is a flowchart showing an operation of performing character expansion and printing out. First, after the line pointer is initialized (step A1), the character string storage unit 4-1 is accessed with this pointer value to read the character string code for one line (step A2). Next, after the digit pointer is initialized (step A3), the 1 designated by the digit pointer
The character codes for the digits are read (step A4). Then, one-character printing processing described later is performed (step A5),
When printing of one character is completed, the value of the digit pointer is updated and the next character is designated (step A6). Thereafter, the process returns to step A5 until the end of printing of one line is detected in step A7, and printing of one character is repeated. When printing of one line is completed, the value of the line pointer is updated (step A8), and the process returns to step A2 until the end of all lines is detected in step A9, and the above operation is repeated.

FIG. 8 is a flowchart detailing step A5 (one-character printing process) in FIG. First, the character 1
An image pointer is initialized to designate an image (step B1). Then, data for one stroke indicated by the stroke pointer is read from the normal font storage unit 2-1 (step B2), and DFT-transformed (step B3).
That is, the number of parts constituting the character font to be processed is obtained, the first part is developed and drawn, the sampling is performed along the contour of the part, and the coordinate value of each sampled point is DFT-transformed. In this case, D
The FT calculation is performed separately for the X coordinate component and the Y coordinate component.
The value of the direction real axis part, the value of the imaginary axis part, and the value of the imaginary axis part of the Y direction real axis part are obtained. When the DFT conversion is performed in this manner, a modified font in which the outline of the character is deformed is generated by manipulating the parameters with respect to the conversion result (step B4). In the example of FIG. 5 described above, a constant value is added as a specific high-frequency component to a low-frequency component to give a constant vibration to the outline of a character. In this way, by reflecting the random number value on the outline data of the character represented by the aggregate of the spatial frequency components, a handwritten character in which the outline of the character is fluctuated is generated.

FIG. 9 shows a modification process in this case, in which an integration process of multiplying a value (Xr) on the real axis in the X direction by a random value from a set of spatial frequency components obtained by the DFT process is shown. At the same time (step C1), an integration process of multiplying the value (Yr) of the Y-direction real number axis by a random value is performed (step C2). FIG. 9 shows the integration processing for changing the value of the real axis in the XY directions, while FIG. 10 shows the integration processing for changing the value of the imaginary axis in the XY directions, and the value (X
An integration process of multiplying i) by a random value is performed (step D1), and an integration process of multiplying the value (Yi) of the imaginary axis in the Y direction by a random value is performed (step D2). FIG. 11 is a flowchart showing the component integration processing in this case.
This component integration is performed for all frequency components after F1. First, the component pointer is initialized (step E).
1). The initialization of the pointer is to be adjusted to the lowest-order frequency component F1, and all components are the number of sampled samples / 2. The integration process is performed by multiplying the frequency component by the random number P. First, a random number value P is captured. This value fluctuates up and down around “1.0”. The current value is captured as a random value (step E2), and the value is multiplied by the value of the frequency component (step E2). B3). For example, in FIG. 5, the first value (−16.656) of the first part in the X direction is a random value (0.98).
Is multiplied by “−16.323”.
Then, in the next step F4, it is checked whether or not all the components have been completed. The process returns to step E2 until the completion is detected, and the above operation is repeated. In this case, another random value is used when integrating the next component. FIG. 11 shows F
FIG. 12 shows a case in which component integration is performed only on a specific frequency component (for example, F2) above F1 or higher, and a random number value P is set in step F1. Is obtained, and step F2
Then, a specific frequency component is multiplied by a random value.

In this way, when the deformation processing for giving fluctuation to the entire contour by reflecting the random number value on the contour data of one part is completed, the process proceeds to step B5 in FIG. Perform the inverse transformation. in this case,
When the contour data of one part is inversely transformed by DFT, the coordinates return to the coordinates at the time of plotting, so that an outline font using this as a short vector is obtained. Then, a rasterizing process for filling the inside of the outline is performed on the print buffer 4-4 (step B6). Then, the next image is designated (step B7), and it is checked whether or not all the images are completed (step B8). The process returns to step B2 until the completion is detected, and the above operation is repeated for each image.

As described above, in the first embodiment, in order to deform the outline of a character represented by a set of spatial frequency components, a random number value is reflected on the outline data, thereby obtaining the outline of the character. , And the contour data of the deformed character is converted into a coordinate sequence to develop and output a handwritten character, so that a natural handwritten character can be obtained. FIG. 13 shows a print example in this case, and FIG. 13A shows a case where no fluctuation is given.
(B) is a case where the fluctuation is given. In this example, the value of the real axis in the X direction and the value of the real axis in the Y direction are increased for all frequency components equal to or higher than F1. The contours all fluctuate slightly, and the handwriting feel is expressed. Here, by controlling the value of the random number, the degree of fluctuation can be further changed. In addition, by multiplying a predetermined element that changes the length for a specific frequency component or all frequency components in a set of frequency components by a random value, or by multiplying a predetermined element that changes the thickness by a random value, Since fluctuations are given to the outline of the character, various types of deformation can be generated from one character font without breaking the shape of the character.

If the parameters relating to the length and the parameters relating to the thickness, ie, the values of the real axis part and the imaginary axis part of the frequency component in the X and Y directions are all integrated by the same random number value, the whole character can be obtained. Can be enlarged / reduced to perform deformation including fluctuation of the size, which is more effective.

(Second Embodiment) Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. In the first embodiment described above, the random number value is reflected on the outline data of a character represented by a set of frequency components. In the second embodiment, the outline of a character represented by a set of frequency components is reflected. At the time of filtering the data, a random number value is reflected on the filter setting value so as to add a fluctuation to the outline of the character, and the rest is basically the same as the first embodiment. Therefore, the following description will focus on only the features of the second embodiment, and the same reference numerals will be used for components that are basically common in each embodiment, and description thereof will be omitted.

FIG. 14 shows a one-character printing process according to the second embodiment. Except for step B4 (manipulate parameters) in FIG. 8 described above, other steps G1 to G3, G
Steps 5 to G8 are similar processes corresponding to steps B1 to B3 and B5 to B8 in FIG. Step G4 in FIG.
A predetermined filter process is performed on the result of the FT conversion. For example, a low-pass filter that cuts a certain frequency component or more, a partial addition filter that adds a specific frequency component, and a value for each real / imaginary number in the XY directions A variety of transformations are performed using a total integration or partial integration filter that integrates the characters without breaking the basic shape of the character. For example, in the case of a low-pass filter, a high-frequency component in a set of frequency components is deleted, and a rounded contour including only low-frequency components that govern the approximate shape of a character is generated. Also, in the case of the total integration filter, the value of the real axis part and the value of the imaginary axis part of each frequency component in the X and Y directions are multiplied by a constant to generate contour data in which the thickness and length of the character are changed. . In the case of partial integration, the imaginary axis part of the predetermined frequency component such as the lowest frequency component F1 in the set of frequency components is left as it is, and the real number axis part is multiplied by a constant to change the momentum of the character. Generate a contour. In the case of a partial addition filter, by performing an addition process of changing a value of a predetermined frequency component in a set of frequency components, a contour of a character is vibrated or a contour whose thickness is changed to a part is generated.

FIG. 15 is a flowchart showing such a filtering process. First, after executing a parameter fluctuation process (step H1) for changing a filter set value, a low-pass filter process (step H2), an overall integration filter process (step H3), a partial integration filter process (step H4), a partial addition filter process (Step H
5) are performed, but these filter processes are for deforming the outline shape of the character without breaking the shape of the character as described above, and a filter process arbitrarily designated in advance among various filter processes is performed. . Here, the parameter fluctuation processing (step H1) is executed according to the flowchart of FIG. First, a set value of a filter specified in advance as a processing target is obtained, and it is copied and stored (step J1). Then, a process of changing the set value is performed for each filter (steps J2 to J5). Here, the changing process of the low-pass filter (Step J2), the overall integration filter (Step J3), the partial integration filter (Step J4), and the partial addition filter (Step J5) is executed according to the flowchart of FIG.
Here, a random value P is obtained (step K1), and the filter set value is changed by adding the random value P to the filter set value (step K2).

As described above, in the second embodiment, in order to deform the contour of a character represented by a set of frequency components, when the contour data is filtered, the set value of this filter is By reflecting the random number value, the contour of the character is fluctuated, and the contour data of the deformed character is converted into a coordinate sequence and the handwritten style character is developed and output, so it is rich in expressive power Handwritten characters can be obtained. FIG. 18 shows a printing example in this case. FIG. 18A shows a case where no fluctuation is given.
(B) is a case where the fluctuation is given.

FIG. 19 shows a modified application of the second embodiment, and shows a filter change process corresponding to FIG. That is, in the filter changing process shown in FIG. 17, a random value is added to the filter set value, but in the filter process of FIG. 19, a root mean of two sets of filter set values is distributed by the random value. It was made. That is, when contour data of a character, which is a set of frequency components, is processed by a plurality of filters arbitrarily selected and designated in advance, a weighted average value of the filter setting values is distributed by random numbers. It is.
Here, two kinds of random number values P1 and P2 are obtained, and the total value B is obtained (step L1).
Random number value P1 + second filter setting value × random number value P2 ÷ B =
A filter change process is performed using the filter setting value calculation formula (step L2). Thereby, the directionality of the fluctuation can be unified. For example, if you have a tendency to rise to the right, the shape is basically similar,
One of them generates a character which rises to the right and the other one does not, so that the fluctuation (handwriting habit) of the person can be reproduced. In this example, two sets of filters are used, but three or more sets can be processed in the same manner.

(Third Embodiment) Hereinafter, a third embodiment of the present invention will be described with reference to FIGS. In addition, if the character is deformed by using the random number value and the printing is performed as in each of the above-described embodiments, the same print result will never be obtained again. However, in the printing of a New Year's card, etc., there is a desire to send the one that has been successfully written once to all persons, so in the third embodiment, the character transformation was repeated many times using a random value. In such a case, it is possible to repeatedly print a print that suits the user's preference. Here, a random value for giving a fluctuation to the outline of the character is generated based on the value set in the random number register. FIG. 20 is a flowchart showing the random number generation processing in this case. First, a random number is generated from the value of the random number register (step M1), and this random number is written to the random number register (step M2). That is, a random number is generated based on the numerical value set in the random number register, for example, by extracting a part of the numerical value after the decimal point obtained by dividing the numerical value by “7”. Then, the next random number is generated by setting the generated random number again in the random number register. Therefore,
If the value set in the random number register at the beginning is the same, the random numbers generated one after another will be the same random number sequence each time, so when confirming the result of deformation processing using the random number value on the display,
By storing the value of the random number register in another memory and writing the value back to the random number register at the time of printing, it is possible to print as many times as the last displayed deformed character.

FIG. 21 is a flow chart showing an outline of processing according to a key operation. When a redisplay key is pressed after inputting a character string (step N1), sample display processing is performed (step N2). This sample display processing is executed according to the flowchart of FIG. 22, and after the value of the random number register is stored in another memory (step P
1) Similar to the above-described first or second embodiment, a character is transformed using a random number, and the result is sample-displayed (step P2). If the sample display matches the user's preference, the user instructs printing. Then, this is detected in step N3, and the process proceeds to step N4, where printing processing is performed. This printing processing is executed according to the flowchart of FIG. That is, the value stored at the time of displaying the sample is recalled and set as an initial value in the random number register (step Q1).
Then, similarly to the above-described first or second embodiment,
The character is transformed using a random number, and the result is printed out (step Q2). Therefore, if the printing is instructed after the sample display, the characters of the sample display can be printed. Step N5 is a process according to another instruction.

In the third embodiment, the most suitable character is selected from the sample display.
Each time a desired character is selected from a plurality of types of handwritten characters generated and displayed using different random numbers, the random number value used to transform the character is stored and saved, and the handwritten character When the printing is instructed, an arbitrary random number value is selected from the stored random numbers and recalled, and the handwritten character deformed by using the random number value is printed out. It may be. In this case, it is possible to select a plurality of types of results that match the taste by sample display, and to select and print the best result from the selected results during printing. Further, in each embodiment, the frequency font is obtained by performing the DFT processing on the existing normal character font. However, the frequency font is fixedly stored in the character font memory, and the frequency font is called and deformed. You may do so.

[0027]

According to the first and second aspects of the present invention, when deforming a contour of a character, which is a set of spatial frequency components, a random number value is used, so that handwriting-like fluctuations are applied to the contour of the character. In addition to being able to express, it can be easily transformed.

[Brief description of the drawings]

FIG. 1A is a block diagram showing an overall configuration of a document data processing device, and FIG. 1B is a diagram showing a main part of a RAM 4.

FIG. 2 is a diagram illustrating a state in which a frequency font is generated by sampling a normal character font for each part and performing DFT processing.

[Fig. 3] Decomposes a normal character font into parts for each DF
FIG. 7 is a diagram illustrating a state of T processing and a frequency distribution diagram in which values of a real part and an imaginary part obtained by performing DFT processing are discretely distributed on a frequency axis.

FIG. 4 is a diagram showing specific numerical values forming a frequency font and showing a correspondence relationship between which part corresponds to which data.

5A is a diagram for explaining a data structure of a frequency font, and FIG. 5B is a diagram showing an output state of a character represented by the frequency font having such a data structure.

FIG. 6 is a diagram exemplifying how a character is deformed when the values of the real axis of the X direction, the values of the real axis of the Y direction, and the values of the imaginary axis of the spatial frequency component are increased or decreased.

FIG. 7 is a flowchart illustrating an overall operation when a character string is printed out.

FIG. 8 is a flowchart detailing step A5 (one-character printing process) in FIG. 7;

FIG. 9 is a flowchart detailing step B4 (parameter operation of a real number axis portion) in FIG. 8;

FIG. 10 is a flowchart detailing step B4 (parameter operation of an imaginary axis part) in FIG. 8;

FIG. 11 is a flowchart detailing the component integration processing of FIGS. 9 and 10;

FIG. 12 is a diagram for describing a modified application example of the first embodiment, and is a flowchart showing a component integration process performed only on a specific frequency component.

13A and 13B are printing examples, in which FIG. 13A shows a printing example in which no fluctuation is applied, and FIG. 13B shows a printing example in which fluctuation is applied.

FIG. 14 is a flowchart illustrating a one-character printing process according to the second embodiment.

FIG. 15 is a flowchart detailing step G4 (filter processing) in FIG. 14;

FIG. 16 is a flowchart detailing step H1 (parameter fluctuation processing) in FIG. 15;

FIG. 17 is a flowchart showing a filter changing process executed in the parameter fluctuation process of FIG. 15;

FIGS. 18A and 18B are diagrams illustrating a printing example in which no fluctuation is applied and FIG. 18B illustrates a printing example in which fluctuation is applied.

FIG. 19 is a view for explaining a modified application example in the second embodiment, and is a flowchart showing a filter changing process corresponding to FIG. 17;

FIG. 20 is a flowchart illustrating a process generation process according to the third embodiment.

FIG. 21 is a flowchart showing an outline of processing according to a key operation.

FIG. 22: Step N2 in FIG. 21 (sample display processing)
5 is a flowchart detailing FIG.

23 is a flowchart detailing step N4 (print processing) in FIG. 21.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 CPU 2 Storage device 2-1 Normal font storage unit 3 Storage medium 4 RAM 4-1 Character string storage unit 4-2 Frequency conversion work unit 4-3 Modified font storage unit 4-4 Print buffer 5 Input device 6 Display device 7 Printing equipment

Claims (10)

[Claims] In order to deform a contour of a character represented by a set of discrete spatial frequency components, a random number value is reflected on the contour data, so that the contour of the character is fluctuated. A character processing means for generating a character; a conversion means for converting contour data of the character deformed by the character processing means into coordinate string data; and a handwritten character based on the coordinate string data converted by the conversion means. An output device for expanding and outputting a handwritten character output device. 2. The character processing means multiplies a predetermined element that changes the length of a specific frequency component or all frequency components in a set of spatial frequency components by a random value.
2. The handwritten character output device according to claim 1, wherein a handwritten character in which a contour of the character is fluctuated is generated. 3. The character processing means multiplies a predetermined element for changing the thickness of a specific frequency component or all frequency components in a set of spatial frequency components by a random number value.
2. The handwritten character output device according to claim 1, wherein a handwritten character in which a contour of the character is fluctuated is generated. 4. The character processing means according to claim 1, wherein the whole character is enlarged / reduced by multiplying all elements constituting a set of spatial frequency components by the same random number value to perform a deformation including a fluctuation in size. The handwritten character output device according to claim 1, characterized in that: 5. A method for modifying a contour of a character represented by a set of discrete spatial frequency components, wherein a random value is reflected on a set value of the filter when the contour data is filtered. A character processing means for generating a handwritten character in which the contour of the character is fluctuated; a converting means for converting the contour data of the character deformed by the character processing means into coordinate string data; Output means for expanding and outputting a handwritten character based on the coordinate sequence data thus obtained. 6. The character processing means, when processing contour data of a character represented by a set of spatial frequency components by a plurality of types of filters, distributes weighted average values of the filter setting values by random numbers. 6. The handwritten character output device according to claim 5, wherein a fluctuation of the handwriting habit is added to the outline of the character. 7. A random number generating means for sequentially generating a predetermined random number from the same initial value, wherein a random number generated by the random number generating means and used when deforming a contour of a character by the character processing means. In addition to storing and saving numerical values,
In addition to displaying the deformed handwritten characters using this random number value, when the printing of the handwritten characters is instructed, the stored random number value is recalled, and the random number value is used. 6. A handwritten character output device according to claim 1, further comprising an output control means for printing and outputting the deformed handwritten character. 8. Each time a desired character is selected from a plurality of types of handwritten characters generated and displayed using different random numbers, a random number value used for deforming the character is stored and saved. When the printing of the handwritten character is instructed, an arbitrary random value is selected and recalled from each of the stored random numbers, and the handwritten character deformed using the random value is processed. 8. The handwritten-style character output device according to claim 7, wherein the character is printed out. 9. A recording medium having a program code read by a computer, wherein a random number value is reflected on the contour data in order to deform a contour of a character represented by a set of discrete spatial frequency components. A function to generate handwritten characters in which the contours of the characters are fluctuated, a function to convert the contour data of the deformed character into coordinate sequence data, and a function to generate handwritten characters based on the converted coordinate sequence data. A recording medium having a program code for realizing a function of developing and outputting characters. 10. A recording medium having a program code read by a computer, wherein the contour data is subjected to a filtering process in order to deform a contour of a character represented by a set of discrete spatial frequency components. In addition, a function to generate handwritten characters with fluctuations in the character outline by reflecting random numbers in the setting values of this filter, and a function to convert the outline data of the deformed character into coordinate sequence data A recording medium having a program code for realizing a function of developing and outputting a handwritten character based on the converted coordinate string data.